I have two Caltrain tickets. They are 4-ride passes (so, they have a total of eight rides) in zones 3-4, however, they can be upgraded. They expire 23 December 2009. I am asking $20 (they would be $29 if you bought them from Caltrain) but I will settle for less if there are no other offers. Pick up from Stanford campus or I can mail them to you for $1 more. Thank you.